Improvement in spindles for spinning-machines



J.-H. S'AWYER.

Improvement in Spindles for Spinning Machines. No. 124,290 Pat'entedMarch5J87 2 Witnesses. Inve ntoL- UNITED STATES PATENT OFFICE.

JACOB H. SAWYER, or LOWELL, MASSACHUSETTS.

Specification forming. part of Letters Patent No. 124,290, dated was, 1872.,

' SPECIFICATION.

I JACOB H. SAWYER, ofLowell, in the county of Middlesex and Commonwealth of Massachusetts, have invented certain Improvements in Spinning and Twisting Machines, of which the following is a specification:

The object of my invention is to reduce the power required for driving those parts of the machine which revolve with and support the bobbin.

Description of the Accompanying Drawing.

Figure 1 is a vertical section through the center of the parts to which the improvement re lates, in which-- Arepresents a portion of arail forming a part of the frame of the machine, and serving as a support for the dead-spindle or standard B. B is the dead-spindle or standard, having a socket or step for the reception of the pivot E, formed in its upper end. 0 is a whorl or its equivalent, runningfreely on B, motion being communicated to it from a drum or shaft connected with the machine. I) is a cover, which extends over the whorl and prevents it from being raised out of its place. E is a pivot or step inserted in the upper end of the standard B for the purpose of supporting the weight and guiding the upper end of the bobbin G. The bobbin is driven by pins or their equivalents, attached to the whorl O, or it may be driven by frictional contact with the whorl. The annular proj e'ction 1? extends inside of the bobbin for a greater or less distance. If the bobbin is driven by its contact with thisprojection, the latter should extend further into the bobbin than when its use is merely to hold the lower end of the bobbin in position. The hole in the upper end of the bobbin is made to fit the surface of the upper part of the pivot, and as the bobbin and pivot turn together, the upper end of the former is steadied by the latter, and no part of the bobbin is subjected to rubbingfriction while turning. Apin, H, inserted transversely in the bobbin, near its upper end, rests in a slot in the upper end of the pivot, and imparts rotary motion thereto, or the pivot may be driven by frictional contact between its outer surface and the bobbin, or by a clutch connecting the two, or by equivalent devices. The pivot should be held in its place in the deadspindle by means of a projection located below the bushing inserted in the spindle, or by some equivalent device. In Fig. 2 the pivot is represented as a part of the bobbin, in which case it runs in a step in the upper end of the deadspindle, substantially as in Fig. 1. In Fig. 3 a shell or ring, E, running on the upper end of the dead-spindle, is substituted in place of the pivot E and for the same purpose.

As applied to ring-spinning and twistingmachines, my invention is distinguished from previous forms by the method provided for steadying the rotation of the upper end of the bobbin by means of a step running in the top of the dead-spindle, and connected with and driven from the whorl solely by means of the bobbin. It is evident that the friction caused by the rotation of the part supportingthe bobbin is greatly reduced by transferring the weight of the bobbin from the large bearing surrounding the dead-spindle at or near the whorl, as heretofore constructed, to the small bearing E at the top of the dead-spindle, as in my invention and the same holds good whether the pivot is independent of the bobbin, as in Figs. 1 and 3, or whether it forms a part of the bobbin, as in Fig. 2.

I am aware that the weight of the bobbins of spinning machinery have heretofore been supported from the tops of the spindles, and that the bobbins have been made to turn by means of clutches and other devices located at that place; but I am not aware that the part which supports and guides the upper end of the bobbin has been constructed as in my in vention in such a manner as to be connected with and receive rotary motion from the whorl bymeans solely of the bobbin. I am also aware that in one form of lllontgomerys machine an auxiliary spindle was inserted into a hollow part of the fixed spindle. I do not, therefore, claim broadly the dead-spindle, having a step formed in its upper end, without reference to its combination, as herein described, with a pivot, whichis connected with the whorl solely by means of the bobbin, so as to revolve simultaneously with and be driven by them,

revolution for revolution, for the purpose of preventing wear of the bobbin by its rubbing friction on a surface not revolving at the same speed as itself. I am aware of the patent of Bradshaw, dated January 18, 1833, and make no claim to any thing, combination, or arrangement of parts contained or described therein.

Claims.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. The combination, substantially as described, of the fixed spindle B, the whorl O, the pivot E, and the bobbin G.

2. The dead-spindle B of a spinning or twisting machine, having its top provided with a socket or step for the reception of the pivot E, which pivot is connected and made to revolve described.

JACOB H. SAWYER. Witnesses:

DAVIS S. TUCKER, O. B. RUsHWORTH. 

